Drum Brake Adjuster
A drum brake adjuster keeps the brake shoes close to the drum as the linings wear.
What is Drum Brake Adjuster?
Most modern drum brakes have automatic adjusters. They compensate for lining wear so pedal and handbrake travel stay short. A seized adjuster causes long pedal travel and a weak handbrake. Some older systems adjust when reversing and braking, others when the handbrake is applied.
How it works
A ratchet or threaded strut extends a little as the shoes wear, keeping clearance small.
Why it matters for your car
Clean and check the adjuster when servicing drum brakes. After shoe replacement, follow the setup procedure so the adjuster works correctly.
Other terms
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